Pearson Edexcel International GCSE (9–1) · PHYSICS · Unit
Energy Resources and Energy Transfers
175 practice questions
Topics covered
Practice questions
121–130 of 175
Question 121
3 marks · Normal
Answer and see the solution →A wind turbine is used to generate electrical energy in a remote village.
(a)[2 marks]Describe the main energy changes that occur in the wind turbine to produce electricity.
(b)[1 mark]State one reason why wind energy is considered renewable.
Question 122
2 marks · Normal
Answer and see the solution →Give two reasons why it is important to use more renewable energy resources instead of fossil fuels.
Question 123
3 marks · Normal
Answer and see the solution →The table shows the start-up cost and annual electricity output for different renewable energy resources used in a town.
Resource Start-up cost (thousand $) Annual output (MWh) Wind turbine 80 180 Solar farm 60 100 Hydroelectric 150 350 (a)[1 mark]Which resource gives the highest annual electricity output?
(b)[2 marks]Which resource has the lowest start-up cost per 1 MWh annual output? Show your working.
Question 124
1 mark · Normal
Answer and see the solution →Name one example of a renewable resource used to generate electricity that does not produce greenhouse gases during operation.
Question 125
1 mark · Easy
Answer and see the solution →State the form of energy that solar heating panels absorb from the Sun to heat water.
(a)[1 mark]State the form of energy that solar heating panels absorb from the Sun to heat water.
(b)[0 marks]Question 126
1 mark · Easy
Answer and check →Which of the following is an important design feature to increase the efficiency of a solar heating panel?
- A.The panel faces towards the Sun
- B.The panel is placed in a shaded area
- C.The pipes are painted white inside
- D.The panel is covered with thick metal plates
Question 127
2 marks · Easy
Answer and see the solution →Explain why the pipes inside a solar heating panel are usually painted black.
Question 128
3 marks · Easy
Answer and see the solution →A solar heating panel is used to heat water in a tank.
(a)[1 mark]State one way you could maximise how much sunlight falls on the panel in a day.
(b)[1 mark]State how the water is heated as it flows through the panel.
(c)[1 mark]Give one reason why the panel is insulated at the back.
Question 129
2 marks · Easy
Answer and see the solution →Consider a location in the northern hemisphere using solar heating panels.
(a)[1 mark]Which direction should panels face for best heating?
(b)[1 mark]Explain why this direction is chosen.
Question 130
1 mark · Easy
Answer and see the solution →State one reason why solar heating panels only provide small quantities of hot water.